1011115401 has 4 divisors (see below), whose sum is σ = 1348153872. Its totient is φ = 674076932.

The previous prime is 1011115349. The next prime is 1011115411. The reversal of 1011115401 is 1045111101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011115401 - 2¹⁴ = 1011099017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011115411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168519231 + ... + 168519236.

It is an arithmetic number, because the mean of its divisors is an integer number (337038468).

Almost surely, 2^1011115401 is an apocalyptic number.

It is an amenable number.

1011115401 is a deficient number, since it is larger than the sum of its proper divisors (337038471).

1011115401 is an equidigital number, since it uses as much as digits as its factorization.

1011115401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337038470.

The product of its (nonzero) digits is 20, while the sum is 15.

The square root of 1011115401 is about 31798.0408358754. The cubic root of 1011115401 is about 1003.6914898016.

Adding to 1011115401 its reverse (1045111101), we get a palindrome (2056226502).

The spelling of 1011115401 in words is "one billion, eleven million, one hundred fifteen thousand, four hundred one".